phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('ee10054c12ca6191e64cf8bd0ed5a391', -1, 1711724187, 1711724187, '2cc96385', -2, 0, 0)

Line : 187
File : sessions.php